Caitlin Clark's WNBA growing pains continued Monday night ... this time, a profane outburst at a ref cost her team a technical foul -- which hurt the Fever in yet another loss.
Clark hurled an F-bomb an official's way late in the fourth quarter of Indiana's tilt with Connecticut at Gainbridge Fieldhouse ... after she believed she was illegally hit on an offensive possession just moments prior.
She ran up to the referee and screamed, "That's a f***ing foul!" ... before she went to regroup with her teammates.